月次予算再配分の提案

INPUT

• Campaign-level performance data, date range: last 30 days
• Campaign configuration and daily budget
• Target CPA per campaign: must be provided in CONFIG (no API source — user configures this)

PROCESS

Step 1 — Data Collection

For each active campaign, pull:

• Total spend (30d)
• Total conversions
• CPA (cost per result)
• Daily budget (convert to display currency for reporting)
• Campaign age (days since creation)

Calculate CPA vs target delta: (actual_CPA - target_CPA) / target_CPA

Step 2 — Segment Identification

Rank all campaigns by CPA ascending (lower CPA = better). Segment into:

• Top 30%: campaigns with CPA in the top 30% AND at or below their target CPA
• Bottom 30%: campaigns with CPA in the bottom 30% AND CPA exceeds breakeven threshold (see CONFIG)
• Middle 40%: no action zone

Step 3 — Exclusion Guards

Exclude from reallocation analysis if ANY of:

• Campaign has not exited learning phase (spent <50× daily budget AND age <7 days)
• Campaign active <14 days
• Campaign underwent budget change in the last 72 hours

Exception: Any campaign with spend >5× daily budget and zero conversions → flag for immediate pause recommendation regardless of segment.

Step 4 — Reallocation Logic

For remaining eligible campaigns:

Only recommend reallocation if:

• Top 30% campaign's current spend is <90% of its daily budget (capacity-constrained)
• Bottom 30% campaign can give up 20% of its spend without going below max($10/day, 20% of current daily budget)

Budget change limits (per month, per campaign):

• Never decrease below max($10, 20% of current budget) — the higher of the two
• Never increase by more than 20%
• Never decrease by more than 20%

Step 5 — Output Table

Output reallocation table with the following columns:

• Source Campaign (bottom 30%)
• Dest Campaign (top 30%)
• Current Budget
• Recommended Budget
• Change %
• CPA (30d)
• Target CPA
• vs Target
• Justification

If no campaigns meet all reallocation criteria: → ✅ No reallocation recommended. All active campaigns within efficient budget range or not capacity-constrained.

OUTPUT

💼 REALLOCATION TABLE

Source Campaign	Dest Campaign	Current Budget	Recommended Budget	Change %	CPA (30d)	Target CPA	vs Target	Justification

⏸️ PAUSE FLAGS (spend >5× daily budget, zero conversions)

Campaign ID	Spend	Daily Budget	Spend/Budget Ratio	Recommendation

🚫 EXCLUDED CAMPAIGNS (due to guard criteria)

Campaign ID	Reason for Exclusion

Append: ⏳ Human confirmation required before any budget changes are applied. Once confirmed, agent will execute adjustments via Meta API.

GUARD

• If fewer than 5 campaigns active: skip reallocation logic (insufficient data), output raw metrics only
• If target CPA is not configured for any campaign: use CPA ranking only (no vs-target delta), note in output
• Do not auto-execute any budget changes — requires human confirmation

CONFIG

Target CPA values must be provided when configuring this routine (no API source). Example:

TARGET_CPA_BY_CAMPAIGN:
  campaign_123: 25
  campaign_456: 40
  # Add entry for each campaign